Selection of items was informed by a review of the literature and drew on the key classroom focus areas of established observational measuresOther observation tools that have been widely used to assess the quality of early learning environments which will support construct validityrefers to whether a scale or test adequately measures the construct (e.g. maths ability) it aims to assess. While definitions of high quality early learning programmes vary somewhat according to context, there is general agreement that the learning environment set up and resourcing, curriculum, approaches to extending learningthis refers to activities and resources in the classroom that help children to acquire new skills and knowledge, teacher child interactions and relationships are critical contributors to programme quality and child learning outcomes. The selection of items also drew on local experience as well as South Africa’s National Curriculum Framework, and National Early Learning and Development Standards.